Dimensions obtained from the cross sections were used in subsequent modelling in the Si9000e.

Graphical results

Raw data were transferred for comparison and presentation to Microsoft Excel. Spreadsheets were generated for both single ended and differential data and resulting graphs plotted.

The charts show measured data for VNA, SET2DIL and SPP, both with hardware IFNs (SPP in the charts) and with software modelled IFNs (charted as SPP No IFN.) Measured results for a typical coupon correlation test are shown below.

Raw data and regression are shown normalised to loss/10mm v frequency in GHz. Phase results are shown as rad/10mm v frequency in GHz.

VNA results are shown to 30 GHz, SPP and SET2DIL are shown to 20GHz (the sampling bandwidth limit of the DSA8300/80E04 TDR system employed.)

Raw data (loss/10mm v Frequency in GHz)

Regression data (loss/10mm v Frequency in GHz)

Phase (rad/10mm v frequency in GHz)

Conclusion

The charts of combined data show good correlation up to the measured bandwidth of 20GHz between VNA, SPP and SET2DIL. The data sets using the software emulated and hardware impulse forming networks show extremely good correlation, with the data sets in most cases overlying each other directly.